Abstract
The design and first results from an electrically isolated and plasma-shielded Rogowski probe, used in the reconnection scaling experiment (RSX), are presented. The probe is designed to withstand extreme thermal shock, plasma corrosion, and be vacuum sanitary, which is accomplished with a machinable boron nitride shell. The novel miniature design, with an inner detecting area of 0.79 cm2, allows accurate position detection of plasma current channels with ≈2 cm radius and to measure local current density profiles. The temporal resolution (<1 μs) is sufficiently high to resolve the dynamic evolution of RSX plasma current channels.
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